15
Aug
Number systemClass 9 math tutorials, closure property, closures, math, mathemafia, NCERT, number system, properties of numbers, rational numbers
Concept: In this tutorial, you will learn about the closure property. It is discussed in detail for the following operations on rational numbers.
- Addition
- Subtraction
- Multiplication
- Division
Number System
- Number System – Best explained with real life examples
- Distributive property of multiplication over addition and subtraction
- Associative property of addition and multiplication
- Closure property
- Additive Identity, Multiplicative identity, Additive inverse, Reciprocal
- Commutative law explained for basic arithmetic operations
- Rational Numbers
- Integers
Polynomials
Important Concepts – Miscellaneous
Surface area and Volumes
- Area / Surface area / Volume – Introduction
- Surface Area of Cube and Cuboid
- Volume Of Cuboid and Cube
- Surface Area of Right Circular Cylinder
- Volume and capacity of Cylinder
- Right circular Cone
- Surface Area of Right circular Cone
- Volume of Cylinder vs Cone
- Litres and Cubic centimetre (cm³)
- Cubic meters to litres